CN104930135A - Four-gear assist transmission and gear shifting process control method thereof - Google Patents
Four-gear assist transmission and gear shifting process control method thereof Download PDFInfo
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- CN104930135A CN104930135A CN201510334363.3A CN201510334363A CN104930135A CN 104930135 A CN104930135 A CN 104930135A CN 201510334363 A CN201510334363 A CN 201510334363A CN 104930135 A CN104930135 A CN 104930135A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
- F16H3/08—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
- F16H3/12—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts with means for synchronisation not incorporated in the clutches
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H2200/00—Transmissions for multiple ratios
- F16H2200/003—Transmissions for multiple ratios characterised by the number of forward speeds
- F16H2200/0043—Transmissions for multiple ratios characterised by the number of forward speeds the gear ratios comprising four forward speeds
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- Mechanical Engineering (AREA)
- Mechanical Operated Clutches (AREA)
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Abstract
The invention provides a four-gear assist transmission and a gear shifting process control method thereof, and belongs to the technical field of automobile drive. The four-gear assist transmission and the gear shifting process control method thereof aim to solve the problem that the sliding mode loss is large when compensation driving power is interrupted in the prior art. An adjacent speed ratio gear assist mode is adopted, a clutch and three synchronizers are controlled, a one-way bearing is set, and accordingly the problem that the sliding mode loss is large due to excessively large speed ratio difference when an assist clutch is used for compensating in order to prevent power interruption in the prior art is solved. Four effective gears can be achieved, adjacent speed ratio gear assistance is adopted in the gear shifting process, the sliding friction loss of the clutch can be reduced, and the energy loss is also reduced. According to the four-gear assist transmission and the gear shifting process control method thereof, automobile starting and power-interruption-free gear shifting can be achieved only through one clutch, the number of parts is small, and the production cost is lowered.
Description
Technical field
The invention belongs to technical field of automobile transmission, be specifically related to a kind of four gear power-assisted gearbox and shift process controlling methods thereof.
Background technique
Mechanical automatic gearbox (AMT), based on manual transmission, by increasing shift-selecting and changing actuating mechanism and clutch actuating mechanism and corresponding sensor and control unit, realizes self shifter.Mechanical automatic gearbox efficiently solves manual transmission can not self shifter and the low problem of automatic transmission transmission efficiency, and structure is simple, and cost is low, and transmission efficiency is high.But the intrinsic defect that shift process medium power interrupts does not obtain basic solution, and bring the problem of shift shock and starting irregularity in shift process, the power character affecting vehicle and the travelling comfort taken, seriously constrain its development and industrialization space.
Power interruption is the structural intrinsic defect of AMT, and the improvement only by control algorithm cannot inherently solve.The transmission system that appears as of double-clutch automatic gearbox (DCT) technology brings dawn, that the one of AMT technology is upgraded, power gear shifting can be realized, and shifting comfort is also greatly improved, but this system architecture is complicated, key components and parts is very high to design, manufacturing technical requirements, causes DCT technical threshold and cost very high, limits the potentiality of its extensive use.
In order to eliminate power interruption, hitachi company proposes the AMT of band assist clutch (servo-clutch), in shift process, is rubbed by the cunning of assist clutch, compensates the driving power interrupted.But this mechanism compensation ability is limited: for 5 shift transmissions, if to all shift processes all energy effective compensation power, power compensation clutch need be installed on top gear position 5 and keep off, its driving disc rotating speed in all shift processes is made higher than driven disc rotating speed, thus to provide driving moment (instead of drawing torque) for shift process.But the power compensation of top gear position is more weak to the compensation ability that low gear is shifted gears, if 5 gear speed ratios are 1,1 gear speed ratio is 4, so for the switching between 1 gear-2 gear, compensate power and be approximately 1/4th, and the speed discrepancy of power compensation clutch is now very large, increase the sharply rising that compensation torque means unit friction work.
Summary of the invention
In order to solve the prior art problem that sliding formwork loss is larger when compensating driving power interruption, the present invention has put forward a kind of four gear power-assisted gearbox and shift process controlling methods thereof adopting adjacent speed ratio gear power-assisted mode.
Described four gear power-assisted gearboxes mainly comprise: input shaft 1, clutch compressing disc 2, clutch friction plate 3, gear I 4, duplicate gear A (left tooth 5, right tooth 6), duplicate gear B (left tooth 8, right tooth 9), output shaft 10, gear II 11, duplicate gear C (right tooth 13, left tooth 14), gear III 16, gear IV 17 and unilateral bearing 18;
Clutch friction plate 3, gear I 4, duplicate gear A and the equal empty set of duplicate gear B are on input shaft 1; Be provided with synchronizer I 7 between duplicate gear A and duplicate gear B to be connected with input shaft 1, gear I 4 is connected with clutch friction plate 3;
The equal empty set of gear II 11, duplicate gear C and gear IV 17 is on output shaft 10; Synchronizer II 12 is between duplicate gear C with gear II 11 and be connected with input shaft 10, synchronizer III 15 be connected with gear IV 17 between duplicate gear C with gear III 16 and empty set on output shaft 10; Gear III 16 empty set is in the connection of gear IV 17 and synchronizer III 15, unilateral bearing 18 is connected with output shaft 10 and between gear IV 17 and output shaft 10, to realize when the rotational speed of gear IV 17 is greater than the rotational speed of output shaft 10, power on gear IV 17 can be delivered on output shaft 10, when the rotational speed of gear IV 17 is less than output shaft 10, the power on gear IV 17 cannot be delivered on output shaft 10;
Synchronizer I 7, synchronizer II 12 and synchronizer III 15 all exist and three kinds of bonding states: intermediate orientation, to be slidably connected state and the state that is slidably connected to the right left;
Gear I 4 engages with gear IV 17, and the left tooth 5 of duplicate gear A engages with gear III 16, and the right tooth of duplicate gear A 6 engages with the left tooth 14 of duplicate gear C, and the left tooth of duplicate gear B 8 engages with the right tooth 13 of duplicate gear C, and the right tooth 9 of duplicate gear B engages with gear II 11.
The present invention can provide four effective gears, specifically describes the power transmission line of each gear below:
When this gearbox 1 keeps off work, synchronizer I 7 is slidably connected to the right, and synchronizer II 12 is slidably connected left, disengaged position in the middle of synchronizer III 15 keeps.Power source outputting power is by input shaft 1, and synchronizer I 7, the left tooth 8 of duplicate gear B, the right tooth 13 of duplicate gear C, synchronizer II 12 is delivered on output shaft 10.
When this gearbox 2 keeps off work, synchronizer I 7 is slidably connected to the right, and synchronizer II 12 is slidably connected to the right, disengaged position in the middle of synchronizer III 15 keeps.Power source outputting power is by input shaft 1, and synchronizer I 7, the right tooth 9 of duplicate gear B, gear II 11, synchronizer II 12 is delivered on output shaft 10.
When this gearbox 3 keeps off work, synchronizer I 7 is slidably connected left, and synchronizer II 12 is slidably connected to the right, disengaged position in the middle of synchronizer III 15 keeps.Power source outputting power is by input shaft 1, and synchronizer I 7, the right tooth 6 of duplicate gear A, the left tooth 14 of duplicate gear C, the right tooth 13 of duplicate gear C, the left tooth 8 of duplicate gear B, the right tooth 9 of duplicate gear B, gear II 11, synchronizer II 12 is delivered on output shaft 10.
When this gearbox 4 keeps off work, synchronizer III 15 is slidably connected left, and synchronizer II 12 is slidably connected to the right, and disengaged position in the middle of synchronizer I 7 keeps, clutch compressing disc 2 is combined with clutch friction plate 3.Power source outputting power passes through input shaft 1, clutch compressing disc 2, clutch friction plate 3, gear I 4, gear IV 17, synchronizer III 15, gear III 16, the left tooth 5 of duplicate gear A, the right tooth 6 of duplicate gear A, the left tooth 14 of duplicate gear C, the right tooth 13 of duplicate gear C, the left tooth 8 of duplicate gear B, the right tooth 9 of duplicate gear B, gear II 11, synchronizer II 12 is delivered on output shaft 10.
The gearshift control procedure of described speed changer is specific as follows:
When rising up into 2 gear from 1 gear, clutch compressing disc 2 is combined gradually with clutch friction plate 3, the power that power source exports, a part is delivered to output shaft 10 by 1 gear power path, and another part power passes through input shaft 1, clutch compressing disc 2, clutch friction plate 3, gear I 4, gear IV 17, unilateral bearing 18 is delivered on output shaft 10.Along with clutch compressing disc 2 and the intensification of clutch friction plate 3 combination degree, the power transmitted by 1 gear is reduced, gradually when being reduced to zero, synchronizer II 12 is thrown off, synchronizer II 12 is slidably connected to the right, and clutch compressing disc 2 separates gradually with clutch friction plate 3, is linked into 2 gears.Power source outputting power is by input shaft 1, and synchronizer I 7, the right tooth 9 of duplicate gear B, gear II 11, synchronizer II 12 is delivered on output shaft 10.
When rising up into 3 gear from 2 gears, synchronizer III 15 is slidably connected to the right, and clutch compressing disc 2 is combined gradually with clutch friction plate 3, the power that power source exports, a part is delivered to output shaft 10 by 2 gear power path, and another part power is by input shaft 1, clutch compressing disc 2, clutch friction plate 3, gear I 4, gear IV 17, synchronizer III 15, the right tooth 13 of duplicate gear C, the left tooth 8 of duplicate gear B, the right tooth 9 of duplicate gear B, gear II 11, synchronizer II 12 is delivered on output shaft 10.Along with clutch compressing disc 2 and the intensification of clutch friction plate 3 combination degree, the power transmitted by 2 gears is reduced, gradually when being reduced to zero, synchronizer I 7 is thrown off, and synchronizer I 7 is slidably connected left, and clutch compressing disc 2 separates gradually with clutch friction plate 3, synchronizer III 15 is thrown off, and is linked into 3 gears.Power source outputting power is by input shaft 1, and synchronizer I 7, the right tooth 9 of duplicate gear B, gear II 11, synchronizer II 12 is delivered on output shaft 10.
When rising up into 4 gear from 3 gears, synchronizer III 15 is slidably connected left, clutch compressing disc 2 is combined gradually with clutch friction plate 3, the power that power source exports, a part is delivered to output shaft 10 by 3 gear power path, another part power is by input shaft 1, clutch compressing disc 2, clutch friction plate 3, gear I 4, gear IV 17, synchronizer III 15, gear III 16, the left tooth 5 of duplicate gear A, the right tooth 6 of duplicate gear A, the left tooth 14 of duplicate gear C, the right tooth 13 of duplicate gear C, the left tooth 8 of duplicate gear B, the right tooth 9 of duplicate gear B, gear II 11, synchronizer II 12 is delivered to output shaft 10.Along with clutch compressing disc 2 and the intensification of clutch friction plate 3 combination degree, the power transmitted by 3 gears is reduced gradually, and when being reduced to zero, synchronizer I 7 is thrown off, and clutch compressing disc 2 is combined completely with clutch friction plate 3, is linked into 4 gears.Power source outputting power passes through input shaft 1, clutch compressing disc 2, clutch friction plate 3, gear I 4, gear IV 17, synchronizer III 15, gear III 16, the left tooth 5 of duplicate gear A, the right tooth 6 of duplicate gear A, the left tooth 14 of duplicate gear C, the right tooth 13 of duplicate gear C, the left tooth 8 of duplicate gear B, the right tooth 9 of duplicate gear B, gear II 11, synchronizer II 12 is delivered on output shaft 10.
Beneficial effect of the present invention:
1, adopt adjacent speed ratio gear power-assisted, the loss of clutch sliding wear can be reduced, reduce energy loss.
2, the present invention only adopts a clutch just can realize vehicle start and power failure-free gearshift, and number of components is few, and cost is low.
3, the present invention can realize 4 effective gears.
Accompanying drawing explanation
Fig. 1 is agent structure of the present invention;
Fig. 2 is that the present invention 1 keeps off lower power transmission line;
Fig. 3 is that the present invention 2 keeps off lower power transmission line;
Fig. 4 is that the present invention 3 keeps off lower power transmission line;
Fig. 5 is that the present invention 4 keeps off lower power transmission line;
Fig. 6 is that power-assisted I of the present invention keeps off power transmission line;
Fig. 7 is that power-assisted II of the present invention keeps off power transmission line;
Fig. 8 is that power-assisted III of the present invention keeps off power transmission line;
Mark in above accompanying drawing is as follows: comprise input shaft 1, clutch compressing disc 2, clutch friction plate 3, gear I 4, the left tooth 5 of duplicate gear A, the right tooth 6 of duplicate gear A, synchronizer I 7, the left tooth 8 of duplicate gear B, the right tooth 9 of duplicate gear B, output shaft 10, gear II 11, synchronizer II 12, the right tooth 13 of duplicate gear C, the left tooth 14 of duplicate gear C, synchronizer III 15, gear III 16, gear IV 17, unilateral bearing 18.
Embodiment
Below in conjunction with Figure of description, technological scheme of the present invention is further elaborated.
As shown in Figure 1, described in the present invention, four gear power-assisted gearboxes mainly comprise: input shaft 1, clutch compressing disc 2, clutch friction plate 3, gear I 4, duplicate gear A (left tooth 5, right tooth 6), duplicate gear B (left tooth 8, right tooth 9), output shaft 10, gear II 11, duplicate gear C (right tooth 13, left tooth 14), gear III 16, gear IV 17 and unilateral bearing 18.
Clutch friction plate 3, gear I 4, duplicate gear A and the equal empty set of duplicate gear B are on input shaft 1; Be provided with synchronizer I 7 between duplicate gear A and duplicate gear B to be connected with input shaft 1, gear I 4 is connected with clutch friction plate 3.
The equal empty set of gear II 11, duplicate gear C and gear IV 17 is on output shaft 10; Synchronizer II 12 is between duplicate gear C with gear II 11 and be connected with input shaft 10, synchronizer III 15 be connected with gear IV 17 between duplicate gear C with gear III 16 and empty set on output shaft 10; Gear III 16 empty set is in the connection of gear IV 17 and synchronizer III 15, unilateral bearing 18 is connected with output shaft 10 and between gear IV 17 and output shaft 10, to realize when the rotational speed of gear IV 17 is greater than the rotational speed of output shaft 10, power on gear IV 17 can be delivered on output shaft 10, when the rotational speed of gear IV 17 is less than output shaft 10, the power on gear IV 17 cannot be delivered on output shaft 10.
Gear I 4 engages with gear IV 17, and the left tooth 5 of duplicate gear A engages with gear III 16, and the right tooth of duplicate gear A 6 engages with the left tooth 14 of duplicate gear C, and the left tooth of duplicate gear B 8 engages with the right tooth 13 of duplicate gear C, and the right tooth 9 of duplicate gear B engages with gear II 11.
Synchronizer I 7, synchronizer II 12 and synchronizer III 15 all exist and three kinds of bonding states: intermediate orientation, to be slidably connected state and the state that is slidably connected to the right left.
The present invention can provide four effective gears, specifically describes the power transmission line of each gear below in conjunction with accompanying drawing:
As shown in Figure 2, when the present invention 1 keeps off work, synchronizer I 7 is slidably connected to the right, and synchronizer II 12 is slidably connected left, and all the other are thrown off.Power source outputting power is by input shaft 1, and synchronizer I 7, the left tooth 8 of duplicate gear B, the right tooth 13 of duplicate gear C, synchronizer II 12 is delivered on output shaft 10.
As shown in Figure 3, when the present invention 2 keeps off work, synchronizer I 7 is slidably connected to the right, and synchronizer II 12 is slidably connected to the right, and all the other are thrown off.Power source outputting power is by input shaft 1, and synchronizer I 7, the right tooth 9 of duplicate gear B, gear II 11, synchronizer II 12 is delivered on output shaft 10.
As shown in Figure 4, when the present invention 3 keeps off work, synchronizer I 7 is slidably connected left, and synchronizer II 12 is slidably connected to the right, and all the other are thrown off.Power source outputting power is by input shaft 1, and synchronizer I 7, the right tooth 6 of duplicate gear A, the left tooth 14 of duplicate gear C, the right tooth 13 of duplicate gear C, the left tooth 8 of duplicate gear B, the right tooth 9 of duplicate gear B, gear II 11, synchronizer II 12 is delivered on output shaft 10.
As shown in Figure 5, when the present invention 4 keeps off work, synchronizer III 15 is slidably connected left, and synchronizer II 12 is slidably connected to the right, and all the other are thrown off, and clutch compressing disc 2 is combined with clutch friction plate 3.Power source outputting power passes through input shaft 1, clutch compressing disc 2, clutch friction plate 3, gear I 4, gear IV 17, synchronizer III 15, gear III 16, the left tooth 5 of duplicate gear A, the right tooth 6 of duplicate gear A, the left tooth 14 of duplicate gear C, the right tooth 13 of duplicate gear C, the left tooth 8 of duplicate gear B, the right tooth 9 of duplicate gear B, gear II 11, synchronizer II 12 is delivered on output shaft 10.
Shift process of the present invention is specifically described below in conjunction with Fig. 3 ~ Fig. 8.
When needs rise up into 2 gear from 1 gear, clutch compressing disc 2 is combined gradually with clutch friction plate 3, the power that power source exports, a part is delivered to output shaft 10 by 1 gear power path, and another part power is by input shaft 1, clutch compressing disc 2, clutch friction plate 3, gear I 4, gear IV 17, unilateral bearing 18 is delivered on output shaft 10, as Fig. 6.Along with clutch compressing disc 2 and the intensification of clutch friction plate 3 combination degree, the power transmitted by 1 gear is reduced, gradually when being reduced to zero, synchronizer II 12 is thrown off, synchronizer II 12 is slidably connected to the right, and clutch compressing disc 2 separates gradually with clutch friction plate 3, is linked into 2 gears.Power source outputting power is by input shaft 1, and synchronizer I 7, the right tooth 9 of duplicate gear B, gear II 11, synchronizer II 12 is delivered on output shaft 10, as Fig. 3.
When needs rise up into 3 gear from 2 gears, synchronizer III 15 is slidably connected to the right, and clutch compressing disc 2 is combined gradually with clutch friction plate 3, the power that power source exports, a part is delivered to output shaft 10 by 2 gear power path, and another part power is by input shaft 1, clutch compressing disc 2, clutch friction plate 3, gear I 4, gear IV 17, synchronizer III 15, the right tooth 13 of duplicate gear C, the left tooth 8 of duplicate gear B, the right tooth 9 of duplicate gear B, gear II 11, synchronizer II 12 is delivered on output shaft 10, as Fig. 7.Along with clutch compressing disc 2 and the intensification of clutch friction plate 3 combination degree, the power transmitted by 2 gears is reduced, gradually when being reduced to zero, synchronizer I 7 is thrown off, and synchronizer I 7 is slidably connected left, and clutch compressing disc 2 separates gradually with clutch friction plate 3, synchronizer III 15 is thrown off, and is linked into 3 gears.Power source outputting power is by input shaft 1, and synchronizer I 7, the right tooth 9 of duplicate gear B, gear II 11, synchronizer II 12 is delivered on output shaft 10, as Fig. 4.
When needs rise up into 4 gear from 3 gears, synchronizer III 15 is slidably connected left, clutch compressing disc 2 is combined gradually with clutch friction plate 3, the power that power source exports, a part is delivered to output shaft 10 by 3 gear power path, another part power is by input shaft 1, clutch compressing disc 2, clutch friction plate 3, gear I 4, gear IV 17, synchronizer III 15, gear III 16, the left tooth 5 of duplicate gear A, the right tooth 6 of duplicate gear A, the left tooth 14 of duplicate gear C, the right tooth 13 of duplicate gear C, the left tooth 8 of duplicate gear B, the right tooth 9 of duplicate gear B, gear II 11, synchronizer II 12 is delivered to output shaft 10, as Fig. 8.Along with clutch compressing disc 2 and the intensification of clutch friction plate 3 combination degree, the power transmitted by 3 gears is reduced gradually, and when being reduced to zero, synchronizer I 7 is thrown off, and clutch compressing disc 2 is combined completely with clutch friction plate 3, is linked into 4 gears.Power source outputting power passes through input shaft 1, clutch compressing disc 2, clutch friction plate 3, gear I 4, gear IV 17, synchronizer III 15, gear III 16, the left tooth 5 of duplicate gear A, the right tooth 6 of duplicate gear A, the left tooth 14 of duplicate gear C, the right tooth 13 of duplicate gear C, the left tooth 8 of duplicate gear B, the right tooth 9 of duplicate gear B, gear II 11, synchronizer II 12 is delivered on output shaft 10, as Fig. 5.
Can find out that from above shift process the present invention can realize adjacent speed ratio gear power-assisted in shift process, while power failure-free, the sliding wear loss of clutch can be reduced.
Table 1 is the gear ratio of each group of engaging gear.
Table 1
| N1 | N2 | N3 | N4 | N5 | |
| Numerical value | 2.70 | 4.00 | 2.67 | 5.00 | 2.50 |
Table 1 middle gear II 11 number of teeth and the ratio of duplicate gear B right tooth 9 number of teeth are N1, duplicate gear C right tooth 13 number of teeth is N2 with the ratio of duplicate gear B left tooth 8 number of teeth, duplicate gear C left tooth 14 number of teeth is N3 with the ratio of duplicate gear A right tooth 6 number of teeth, gear III 16 number of teeth is N4 with the ratio of duplicate gear A left tooth 5 number of teeth, and gear IV 17 number of teeth is N5 with the ratio of gear I 4 number of teeth.
The Speed Ratio Distribution that table 2 is each gear of the present invention.
Table 2
| Work gear | Power-assisted gear | |
| I1 | I1＝N2＝4.00 | |
| I1-2 | I1-2＝N5＝2.5 | |
| I2 | I2＝N1＝2.70 | |
| I2-3 | I2-3＝N5÷N2×N1＝1.687 | |
| I3 | I3＝N3÷N2×N1＝1.80 | |
| I3-4 | I3-4＝N5÷N4×N3÷N2×N1＝0.90 | |
| I4 | I4＝N5÷N4×N3÷N2×N1＝0.90 |
In table 2, I1 is 1 gear speed ratio, and I2 is 2 gear speed ratios, and I3 is 3 gear speed ratios, and I4 is 4 gear speed ratios, and I1-2 is that power-assisted I keeps off speed ratio, and I2-3 is that power-assisted II keeps off speed ratio, and I3-4 is that power-assisted III keeps off speed ratio.
Claims (5)
1. four gear power-assisted gearboxes, is characterized in that: described gearbox comprises: input shaft (1), clutch compressing disc (2), clutch friction plate (3), gear I (4), duplicate gear A, duplicate gear B, output shaft (10), gear II (11), duplicate gear C, gear III (16), gear IV (17) and unilateral bearing (18);
Clutch friction plate (3), gear I (4), duplicate gear A and the equal empty set of duplicate gear B are on input shaft (1); Be provided with synchronizer I (7) between duplicate gear A and duplicate gear B to be connected with input shaft (1), gear I (4) is connected with clutch friction plate (3);
The equal empty set of gear II (11), duplicate gear C and gear IV (17) is on output shaft (10), synchronizer II (12) to be positioned between duplicate gear C with gear II (11) and to be connected with input shaft (10), synchronizer III (15) be positioned to be connected with gear IV (17) between duplicate gear C with gear III (16) and empty set on output shaft (10), gear III (16) empty set is in the connection of gear IV (17) and synchronizer III (15), unilateral bearing (18) is connected with output shaft (10) and is positioned between gear IV (17) and output shaft (10), to realize when the rotational speed of gear IV (17) is greater than the rotational speed of output shaft (10), power on gear IV (17) can be delivered on output shaft (10), when the rotational speed of gear IV (17) is less than output shaft (10), power on gear IV (17) cannot be delivered on output shaft (10),
Synchronizer I (7), synchronizer II (12) and synchronizer III (15) all exist and three kinds of bonding states: intermediate orientation, to be slidably connected state and the state that is slidably connected to the right left;
Gear I (4) engages with gear IV (17), the left tooth of duplicate gear A (5) engages with gear III (16), the right tooth of duplicate gear A (6) engages with the left tooth of duplicate gear C (14), the left tooth of duplicate gear B (8) engages with the right tooth of duplicate gear C (13), and the right tooth of duplicate gear B (9) engages with gear II (11).
2. the shift control method of a kind of four gear power-assisted gearboxes according to claim 1, it is characterized in that, the drive connection of four gears of described gearbox is as follows:
When this gearbox 1 keeps off work, power source outputting power passes through input shaft (1), synchronizer I (7), the left tooth of duplicate gear B (8), the right tooth of duplicate gear C (13), synchronizer II (12) is delivered on output shaft (10).
When this gearbox 2 keeps off work, power source outputting power passes through input shaft (1), synchronizer I (7), the right tooth of duplicate gear B (9), gear II (11), synchronizer II (12) is delivered on output shaft (10).
When this gearbox 3 keeps off work, power source outputting power is by input shaft (1), synchronizer I (7), the right tooth of duplicate gear A (6), the left tooth of duplicate gear C (14), the right tooth of duplicate gear C (13), the left tooth of duplicate gear B (8), the right tooth of duplicate gear B (9), gear II (11), synchronizer II (12) is delivered on output shaft (10).
When this gearbox 4 keeps off work, power source outputting power is by input shaft (1), clutch compressing disc (2), clutch friction plate (3), gear I (4), gear IV (17), synchronizer III (15), gear III (16), the left tooth of duplicate gear A (5), the right tooth of duplicate gear A (6), the left tooth of duplicate gear C (14), the right tooth of duplicate gear C (13), the left tooth of duplicate gear B (8), the right tooth of duplicate gear B (9), gear II (11), synchronizer II (12) is delivered on output shaft (10).
3. the shift control method of a kind of four gear power-assisted gearboxes according to claim 2, it is characterized in that: when described gearbox rises up into 2 gear from 1 gear, clutch compressing disc (2) is combined gradually with clutch friction plate (3), along with clutch compressing disc (2) and the intensification of clutch friction plate (3) combination degree, the power transmitted by 1 gear is reduced gradually, when being reduced to zero, synchronizer II (12) is thrown off, synchronizer II (12) is slidably connected to the right, clutch compressing disc (2) separates gradually with clutch friction plate (3), be linked into 2 gears.
4. the shift control method of a kind of four gear power-assisted gearboxes according to claim 1, it is characterized in that, when described gearbox rises up into 3 gear from 2 gears, synchronizer III (15) is slidably connected to the right, clutch compressing disc (2) is combined gradually with clutch friction plate (3), along with clutch compressing disc (2) and the intensification of clutch friction plate (3) combination degree, the power transmitted by 2 gears is reduced gradually, when being reduced to zero, synchronizer I (7) is thrown off, synchronizer I (7) is slidably connected left, clutch compressing disc (2) separates gradually with clutch friction plate (3), synchronizer III (15) is thrown off, be linked into 3 gears.
5. the shift control method of a kind of four gear power-assisted gearboxes according to claim 1, it is characterized in that, when described gearbox rises up into 4 gear from 3 gears, synchronizer III (15) is slidably connected left, clutch compressing disc (2) is combined gradually with clutch friction plate (3), along with clutch compressing disc (2) and the intensification of clutch friction plate (3) combination degree, the power transmitted by 3 gears is reduced gradually, when being reduced to zero, synchronizer I (7) is thrown off, clutch compressing disc (2) is combined completely with clutch friction plate (3), be linked into 4 gears.
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|---|---|---|---|
| CN201510334363.3A CN104930135B (en) | 2015-06-16 | 2015-06-16 | A kind of four keep off power-assisted change speed gear box and its shift process control method |
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|---|---|---|---|
| CN201510334363.3A CN104930135B (en) | 2015-06-16 | 2015-06-16 | A kind of four keep off power-assisted change speed gear box and its shift process control method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105485267A (en) * | 2016-01-19 | 2016-04-13 | 吉林大学 | Normally-closed duplex gear transmission for clutch and shifting process control method of normally-closed duplex gear transmission |
| CN109595306A (en) * | 2017-09-30 | 2019-04-09 | 比亚迪股份有限公司 | A kind of transmission system and its process for gear |
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| US5161423A (en) * | 1990-12-24 | 1992-11-10 | Eaton Corporation | Self-energizing synchronizer for equalizing shift time and effort of a multi-ratio transmission |
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| CN204755782U (en) * | 2015-06-16 | 2015-11-11 | 吉林大学 | Fourth speed helping hand gearbox |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105485267A (en) * | 2016-01-19 | 2016-04-13 | 吉林大学 | Normally-closed duplex gear transmission for clutch and shifting process control method of normally-closed duplex gear transmission |
| CN105485267B (en) * | 2016-01-19 | 2017-11-03 | 吉林大学 | A kind of normally closed duplicate gear gearbox of clutch and its shift process control method |
| CN109595306A (en) * | 2017-09-30 | 2019-04-09 | 比亚迪股份有限公司 | A kind of transmission system and its process for gear |
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| Publication number | Publication date |
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| CN104930135B (en) | 2017-04-05 |
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